Possible: Lincoln tries to get to the T.V. and shouts to Leni. She thinks there's a spider on her, and frantically rubs her head trying to get it off. Then Lincoln says there's actually a zit on the end of her nose. She runs off thinking she's a hideous monster.
When the lights go out, Leni thinks she's gone blind.
She thinks someone is touching her hand when she is actually touching her own hand.
When the lights are back on, she still thinks she's blind because her eyes are closed, but Lisa told her to open her eyes and she thinks it's a miracle.
When Lori tells her to make her bed because she needs a ride to the mall, she thought Lori meant it literally, and builds a bed.
She failed her driving test 12 times, one of her failures included crashing Vanzilla into a tree, and setting a fire hydrant to spring a leak, with a nun screaming at the top of her lungs in a panic, and a paper boy hanging by a branch.
When she goes to the DMV to take her driving test, she goes the wrong way.
She fails her test again because she believes that everything she did on Lincoln's video game is supposed to happen in real life.
She doesn't know how to drive a lawnmower, and drives through the hedges.
She doesn't know about car parts or where they are located.
She tries to turn off the lamp with her sleeping mask on, as well as thinking she got it when Lori says "Click".
While listing off all the places Leni could've driven her siblings to, she mentions the mall twice.
When Lori confessed she sabotaged Leni's driving test, Leni didn't seem to know about the word sabotage.
Lori says she'll make it up to Leni, she asks if she'll buy her the dress, after Lincoln explained sabotaged in a different way.
She accidentally drives Vanzilla into a swimming pool, and thinks it's the carpool lane.
She tells Lori that she brushes her hair exactly 50 times a day to keep it beautiful. She's at 34; when Lori asks her how old the boy that asked her out was, she loses count and starts counting up from 16.
She wastes water by running it and not even using it.
When Lincoln tells her to use a moist towelette to clean herself, she tells him she's showering and closes the curtain on herself even though she's fully dressed. Lincoln does this at the end of the episode as well.
When Lincoln takes the TV away, Leni picks up the remote and thinks their neighborhood is on TV.
When Lincoln takes the fridge away, Leni comes in to get a drink of water and ends up getting nothing but air. She even demands a refill when she and the other girls get their stuff back.
When Lincoln asks for help after Lana hogtied him, Leni comes back for him, apologizes, and carries him like a handbag instead of untying him.
Luna tells Leni to sing backup, and she sings the actual word "backup" as opposed to the actual lyrics. Then Luna tells her she has to sing what's on the page, to which she responds by singing "what's on the page" literally.
During the family's performance, Leni walks backwards, claiming she's a "backup" dancer and falls off the stage.
After Lincoln and the girls trap Luan in a crate, they make fun of her with crate-related puns. Leni made a joke saying, "You're in a crate!" and laughs at that, while the others just stare at her confused. Lincoln says that they should put it to bed.
When the other girls are hiding from Luan's pranks and run out of food thanks to Lana eating it all, they suggest to draw straws. Leni just concedes to going and sacrificing herself because she claims to be a terrible artist, meaning she would make a terrible drawing of a straw.
While Lincoln avoided Luan's kitchen direction arrows, Leni follows them to who-knows-where, and thanks each and every one of them.
When Lori needs a plan to get Bobby back from Lincoln, Leni suggests that she hang out with Ronnie Anne because she thinks Ronnie Anne would be like the sister Lori never had. Lori already has nine sisters by the way Leni meant it. It wouldn't be so dumb if she meant it the other way around, though.
When everybody is complaining that Lola knows their secrets, Lynn thinks there's a rat (a snitch) in the group. Leni thinks Lynn was referring to a real rat, as she jumps in fear and asks where it is before Lisa corrects her by giving her the correct meaning.
When Lincoln realizes Lola was the true rat, he tells his sisters that her name rhymes with "granola". Leni presumes that Lisa was the rat.
When Leni checks Lincoln's temperature to make sure he isn't sick, she wrongly says that Lincoln's temperature is 986° F. She meant to say 98.6° F, the normal human body temperature.
While firing chicken noodle soup at the sick siblings, Lincoln warns Leni that Lori is at 9:00 (behind her). Leni tells him to make up his mind, asking what time it is, not knowing the contagious Lori is behind her.
When Lincoln says that she's starting to act like Mother Teresa, her rebuttal is that their mother's name is Rita, not Teresa.
She gets picky about the protective masks she could wear, even though the sick siblings are behind her.
When Lincoln tells Leni to duck after Luna sneezes, she thinks there's a real duck and asks if it's sick.
When Leni came downstairs wearing her new dress, she thought Lori holding her dress (which was the same one Leni bought) was a brand new mirror that was installed.
When Lincoln asks Lori and Leni how they resolved their fight over the dress, Leni says that Lori gets to wear it on any day of the week that ended with "Y", and she gets to wear it the rest of the time. In other words, Lori gets to wear it every day of the week (since the days of the week all end with "Y"), while Leni will never have a day to wear it.
Leni says her life's work is a six-piece kiddie puzzle.
When Lynn teaches Leni and Lola to fight a dummy just in case if a burglar broke in, Leni flirted with the dummy instead of attacking, claiming it looked cute. When Lola attacked it, however, Leni chastised Lola for attacking it, thinking "he" liked her.
When the Loud kids were cheering when Lincoln informed them that the burglar was caught, Leni still had feelings towards the dummy (which she named Donnie), and says that she and "Donnie" should've ran away to Mexico while they had the chance.
Leni claims she has a deadly spray to use against the burglar called "Fatal Encounter". However, Lori points out she's just holding a perfume sample.
Lincoln tells Leni that he doesn't want to go her charity fashion show out of fear that his "bad luck" could make her trip, jam a zipper, or break a heel. Later, when Lana offers Lincoln to come to her alligator wrestling match, Leni intervenes, and tells Lana to reconsider inviting Lincoln, giving the same exact reasons Lincoln told her earlier (trip, jam a zipper, or break a heel).
Possible: When Lincoln can't come to the movies with the family because of his "bad luck", Leni says she'll tell him how the movie ends, which is considered a spoiler.
When Leni asks Clyde if he wants a partner to play with on the seesaw, Clyde denies the offer, saying that he has Lincoln (which is actually a rock with Lincoln's face painted on it). Leni, not noticing that it's not the real Lincoln, says hi to "him". Later, when the twins attacked Clyde for ruining their sandcastle, Leni, needing to go to the bathroom, asked "Lincoln" to watch the twins while she's gone.
Possible: She gave Lynn Sr. a 10 just for using skates to cut up hotdogs as if he was actually in a figure skating competition.
She hides the ingredients for Lynn Sr.'s goulash in his slippers and robe, which leads to the parents finding out the kids sabotaging the meal.
When deciding on what dish to make for their parents, Leni suggests they make goulash. When Lincoln tells her that goulash is one of the dishes their father cooks weekly, and want to avoid it, which is why they're doing this, Leni claims that she misses it.
Leni asked Lori if the dress she's wearing (which is her usual dress) clashes with the color of her toenails. When Lori says it's fine, she heads back into her closet, and a few moments later, she asks the same question while wearing the same dress.
Leni says that Lori's lucky that she gets her own room, despite having her own room now (because of Lori's absence).
When Lana came into her room to tell her that she had a bad dream, Leni tells Lana what the dream was about. When Lana said that blood-sucking aliens were approaching her, Leni panicked, and started barricading her door with her dresser, believing that the blood-sucking aliens were real.
When Lori faked the garage being infested with mice, Lisa used her latest invention to hypnotize the mice, saying that they're easily fooled because of their miniscule brains. Leni, however, falls victim to the machine, due to her low intelligence.
When Rita and Lynn Sr. wanted Lori and Leni to take SAT prep classes, since it's the best way to get into a good college, Leni remarks "What about just using the front door?"
Because of that remark, Rita suggests they book Leni up for the double session, which could mean she needs twice as much education than Lori, due to her lack of intelligence.
While taking photos of Lori, Luan, and Lucy, Leni took a photo of them while Lori wasn't ready yet, due to her telling Luan that she was doing her duck face wrong.
When the Loud family was picking up trash on the interstate, Leni is unaware that her garbage bag has a hole in it, causing whatever trash she puts in to fall out, prompting her to put it back in, with similar results.
When Lori and Leni arrived home after taking their SAT prep classes, Leni, along with Lori, stated that their verbal scores went up 200, and Leni says her verbal score is now 200, meaning that her verbal score was originally 0 (which means she was completely illiterate beforehand).
Possible: Just like "Along Came a Sister", she thinks Luan's fake spider is real.
When Lynn was gloating "Lynn-er, Lynn-er, chicken dinner!", Leni responds with "I thought we were having salmon."
After Lynn smacked Leni into the wall, when "racing" her up the stairs, Lynn says "You went down hard!", and Leni responds with "I thought I was going up", while also walking into the direction of the wall.
Leni ruins the Louds' plan to throw the game, so Lynn could win by literally throwing the game board out of the window.
At the beginning of the episode, it was established that flushing the toilet would injure whoever's taking a shower. Leni, however, forgot about that, and unknowingly hurt Luna while she was showering.
Lincoln tells the siblings that Luan heard everything they said and she's giving up comedy. Leni thinks that Luan's show at the Chortle Portal will be really bad.
Leni does a spit take whenever someone talks, even if it's not a joke.
When everyone is off topic, Lincoln tries to get them back on track by picking up where they were in their talk, Leni tells him they're in his room.
When Lisa says she wants to talk about genome mapping, Leni thinks she means their pet Geo.
And when Lisa corrects Leni, Leni wonders when they renamed him.
She accidentally told her siblings a secret involving her stepping on Lincoln's model spaceship, and tossing the pieces in Mr. Grouse's garbage can so he would never find it. When Lincoln questions if she actually did that, Leni is quick to chastising Lola for blurting it out (since her episode involves gossiping), despite Lisa telling her that she just told everyone herself.
Later, when the siblings refuse to let Lola continue with her podcast, Leni tries to say the spaceship incident was her (Lola's) fault, where, once again, Lisa corrects her by saying that she did that.
According to Lola, Leni once brought a bar of soap to a meteor shower.
She didn't know that the red light meant the microphone was on.
She spent $70 on a new outfit even though it was a podcast and nobody could see her.
She wanted to start at the nail salon, but later she figured the listeners didn't want to hear about it.
She thought 50% off and half off were two different things.
She commented on the department store being called the anchor store, even though she never saw an anchor in it.
When Lincoln said "You're the best, Leni!", Leni thought he meant she was the best among other Leni's, (who she didn't know).
Possible: She accidentally laid her eyes on a puppy at the pet store, prompting her to adopt it.
According to Lynn Sr., Leni frequently tries to dry her hair using the microwave.